Silurian ultramafic rocks

Silurian ultramafic rocks
State Maine
Name Silurian ultramafic rocks
Geologic age Silurian
Lithologic constituents
Major
Igneous > Plutonic > UltramaficU - Unmetamorphosed
Comments GS - Greenschist facies; AB - Medium rank amphibolite facies; Protolith V - Basaltic volcanic rocks
Stratigraphic units includes: 74 - Union ultramafic pluton (ME110).
References

Osberg, P.H., Hussey, A.M., and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Dept. of Conserv., scale 1:500,000.

Gaudette, H.E., 1981, Zircon isotopic age from the Union ultramafic complex, Maine: Can. Jour. Earth Sci., v. 18, p. 405-409.

NGMDB product
Counties Hancock - Knox - Waldo